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Persistent "grid%tsk unreasonable" Error in real.exe

S

spark1

New member
During the execution of real.exe, I have consistently encountered the following error message:

error in the grid%tsk i,j= 24 12
grid%landmask= 0.00000000
grid%tsk, grid%sst, grid%tmn= 0.00000000 0.00000000 0.00000000
-------------- FATAL CALLED ---------------
FATAL CALLED FROM FILE: <stdin> LINE: 3110
grid%tsk unreasonable

I confirmed the presence of reasonable values for LANDSEA, SST, and SKINTEMP variables in the met_em* files.

I sourced the ERA5_INVARIANT from here and followed the specified procedures to integrate it into my WRF setup.

Despite my efforts, I have been unable to pinpoint the root cause of the persistent "grid%tsk unreasonable" error.
I kindly request your expertise and guidance to diagnose and resolve this issue.
Any insights, suggestions, or alternative approaches you can provide would be immensely helpful.
 
This seems like a landmask issue, i.e., at the GRID point (24,12), LANDMASK indicates it is a water point, but SST is zero at this point, which apparently is not reasonable.

Did you ungrib ERA5 data? Where did you download the data?
 
Ming Chen said:
This seems like a landmask issue, i.e., at the GRID point (24,12), LANDMASK indicates it is a water point, but SST is zero at this point, which apparently is not reasonable.

Did you ungrib ERA5 data? Where did you download the data?
Click to expand...
At first I downloaded from cds copernicus. Since I had the same issue I tried again with the one from rda ucar. But, when I check ncview of the met file, it has reasonable temperature for both land and lake.
 
@Ming Chen,
yes, I got the same error from RDA and CDS. One of the previous post in this forum solved the issue by modifying SST in METGRID.TBL. I wonder if that could work. What do you think about THIS LINK?

Also, instead of using ERA5_INVARIANT from How to Process ERA5 Data, are there other ways of including landmask? e,g, I did ungrib, for PL and SFC separately with the ERA5_INVARIANT file in the directory and add constants_name = 'ERA5_INVARIANT' in the &metgrid section in the namelist.wps. If I use e5.oper.invariant.128_172_lsm.ll025sc.1979010100_1979010100.grb from RDA with pressure level data and surface data, how should I ungrib this file then?
 
I also faced the same issue. while running real.exe
Using sfcprs to compute psfc
d01 2017-11-27_00:00:00 No average surface temperature for use with inland lakes
Assume Noah LSM input
-------------- FATAL CALLED ---------------
FATAL CALLED FROM FILE: <stdin> LINE: 3062
grid%tsk unreasonable

The error was related to the geogrid.exe. The geographic data was not full. But the geogrid.log didn't show any error.
## Error
1. geo_em files show unreliable values for LANDMASK, SKINTEMP , SOILTEMP, HGT_M and ALBEDO12M variables.
2. It will reflect to met_em files also.
3. So real.exe cant read these inputs from met_em files, if you are using sf_surface_physics =2, 3, 4, or 5 (LSM)
## solution
1. Make sure the path to GEOG files is correct eg: /home/user/WPS_GEOG/ (Sometimes path starting with ~/WPS_GEOG/ won't work )
2. Re-run geogrid.exe, ungrib.exe and metgrid.exe

My error has been solved and here I attach the solution for the public.!
 
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